This is small integrated amplifier at 20W using a TDA2004 or TDA2005 IC,use 12V supply for BCL car audio amps
The TA8225 is BTL audio power amplifier for consumer application. It is designed for 45W high power. Operating supply voltage: VCC = 9~18V
This is gainclone amplifier circuit, project as stereo 40W-56 watt main amplifer use LM3875. It easy to build by 2 ICs ,more a few parts ,without any set...
This is Hybrid power amplifier circuit with PCB layout,100W-150W using STK4044XI,STK4046XI,STK4048XI so low THD and low and full protection system
If you want build hi-fi power amplifier about 30watt to 50Watt or 75 watt. Recommend use TDA2050 below, builds by the integrated circuit and PCB layout.